10... h7h5 This is probably best, although the position is not easy to play since Black cannot castle - the rook needs to protect the h-pawn. 11. a2a3 An interesting semi-waiting move in order to see Black's intentions. The move can be useful later to gain space on the queenside with b4 or to remove a possible check on b4. 11... f6e4 A new move and not an accurate one. Black has several options: 12. g3h5  12... e4c3 